Faults in aero starter generator by analyzing the spectrum of motor armature current could be effectively detected and diagnosed. 对航空直流起动发电机的电枢电流波形进行频谱分析可有效地对电机的故障进行检测和诊断。
Compared to three-phrase synchronous generator, the difficult of single phase synchronous generator is that the magnetic field of armature reaction is pulsating. 单相同步发电机与三相同步发电机比较,其主要难点在于其电枢反应磁场为脉振的。
The generally mathematical model for calculating the steady state currents of the multi branch hydro generator with the internal armature winding faults is established in this paper. 建立了求解多分支水轮发电机定子绕组内部故障情况下的稳态电气量的通用数学模型。
According to peculiarity of rare earth permanent magnet synchronous generator with radial exciting structure, the thesis analyzes and researches its computation method of magnetic circuit and armature reaction. It designs and calculates characteristic of the machine by use of vector diagram. 从径向激磁结构的稀土永磁同步发电机的特点出发,分析研究了其磁路和电枢反应计算方法,并运用矢量图进行设计求解。
In this paper, according to the structure of 6-phase Y-Y winding of 30 degrees phase displacement, and practical wave form of armature currents of synchronous generator connected to a rectifier bridge, the armature MMF of synchronous generator is analysed systematically. 根据六相双丫移30°绕组的结构特点以及同步发电机与整流桥不同联接方式下电枢电流的实际波形,对其电枢磁势进行了系统的分析推导,得出了具有普遍意义的计算公式。
This machine is a new kind of generator which comprises DC armature winding connected with a polyphase full wave rectifier bridge. 此发电机是一种新型发电机,它由直流机电枢绕组外接多相全波整流桥组成。
The voltage between the system and generator must be small enough to ensure minor current in the armature winding of generator, avoiding the impact to the coupling shaft. 发电机电压与系统电压之差必须足够小,避免合闸时发电机电枢绕组电流过大,对发电机联轴系统产生冲击。
Transient Analyse of Salient Pole Synchronous Generator Armature Winding Internal Faults 凸极同步发电机定子绕组内部故障暂态分析
An equivalent magnetic circuit model of the generator was presented. The calculation formulas for electromagnetic force, the armature inductance and generating efficiency of the generator were deduced. The main structure parameters of the generator were optimized. 建立了相应的等效磁路模型,推导了电磁力、电枢电感、发电效率等各个性能参数的计算公式,对主极磁环厚度、辅助磁环长度等结构参数进行了优化计算。
The parameters are optimized repeatedly in order to meet the requirements. The generator is a semi-closed magnetic circuit structure. The armature reaction magnetomotive force generated by the coil and the permanent magnetomotive force generated by the permanent magnet will influence mutually and lead to magnetic saturation. 本电机属于半闭合磁路结构,由线圈产生的电枢反应磁动势与永磁体产生的永磁磁动势会相互影响造成磁路饱和,所以需要在磁路中设置磁路调整环以改善磁通饱和情况。
To ensure continuous current in the generator armature and minimize the switch loss in the IGBT, the determination method for the PWM frequency was given out. 给出了以保证电机电枢电流连续和实现开关损耗最低为目标的PWM开关频率的确定方法。